Circular sawing machine



(No Model.)

2 Sheets-Sheet 1. O. TOLLNER. CIRCULAR SAWING MACHINE. No. 344,066.PatentedJune 22, 1886.-

WITNESSES:

A TTOR/VEKS,

u PETERS. "mum-1 m. Washington. 0.0

(No Model.) 2 Sheets-Sheet 2.

OQTOLLNER.

GIRGULAR SAWING MACHINE. No. 344,066. Patented June 22, 1886.

AIME/v56 PATENT FFlCE.

CHARLES TOLLNER, or PULASKI, NEW YORK.

CIRCULAR SAWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 344,066, dated June 22,1886. Application filed September 3, 1885. Serial No. 176,0(i0. (Nomodel.)

To all whom it may concern.-

Be it known that I, CHARLES TOLLNER, a resident of Pulaski, in thecounty of Oswego and State of New York, have invented an ImprovedOircularSaw Machine, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, in whicha Figure l is a side view of my improved circular-saw machine. Fig. 2 isa front elevation of the same; Fig. 3, a cross-section on the line c inFig. 1. Fig. 4is a perspective view of the saw-machine; and Fig. 5 aperspective view of a modification of the same. i

This invention relates to a new machine for sawing boards, cuttingstraight grooves and the like; and it consists in a combination of partshereinafter described, by means of which the circular saw, besides beingrevolved, is

also capable of longitudinal motion, all as hereinafter more fullydescribed.

I find that for many purposes it is more practicable to move the sawthan the board, and especially so in making boxes, when long boards,some of .which are thirteen feet in length, are used and cut into shortpieces. It is impracticable to move a thirteenfoot board properlyagainst the circular saw, and therefore these long boards, where theymust be fed against the saw, are first cut in two, or into shorterpieces, which can then be fed against the saw with less inconvenience.This, however, causes waste and unnecessary labor..

Moreover, in any machine in which the board lies permanently and firmly,it is easy to move the saw, so as to cut off pieces with grooves forboxes or produce grooves in the board, the operator always seeingprecisely what work is being performed, while in machines in which theboard must be moved against the saw, or over the same, such closeinspection cannot be had.

In the accompanying drawings, the letter A represents the frame of themachine, which is made of suitable material, size, and shape. 7 B is adriving-shaft, which is hung in the lower part of the frame A, and towhich rotary motion is imparted by suitable mechanism, preferably by abelt running over a pulley, at, which is carried by the said shaft B, asshown in Fig. 2.

D isa bar whose both ends are forked, as shown in Fig. 2. In its forkedlower end it carries boxes b, that embrace the shaft B. The

upper forked end of the bar D has bearings,

in which is hung a shaft, E. This shaft E carries a pulley, d, which isstraddled by the upper fork of the bar D, and which, by a belt, 6,connects with a pulley, f, that is mounted upon the shaft B. The lowerfork of the bar D straddles the pulley f. Rotary motion can betransmitted from the shaft B to the shaft E, and yet the latter shaft isfree to vibrate on its supporting-bar D around the axis of the shaft B.

F is a swiveled frame, which at one end connects with the shaft E and atthe other end with a shaft, G, said shafts being both swiveled in theends of the frame F, respectively, or in suitable boxes, which saidframe carries. The shaft G carries a pulley, g, which, by a belt, h,connects with a pulley, t, that is mounted upon the shaft E, so that themotion of the shaft B can be transmitted to the shaft E, and thence tothe shaft G, while said three shafts B, E, and G are connected by thejointed bar D and frame F. The shaft G is also supported in boxes j,which are rigidly attached to a sliding carriage, H, that is guided in agrooved upper portion, Z, of the frame A.

Fig. 3 shows the parts H and Z in cross-seetion, and from this figure itwill be clearly understood that the outwardly-projecting rails or ribson the sliding carriage H enter grooves in the stationary framing Z, andare thus supported and guided in a straight line. A suitable circularsaw, I, is mounted upon the shaft G. A suitable handle, m, is attachedto the frameF, to allow the operator to move the saw backward orforward.

J is a guiding-table, upon which the board to be cut is to be placed.This table J may be grooved beneath the saw, as indicated in Fig. 2,thereby allowing the saw to produce a clean out, so that there will beno fuzz on the edge of the piece cut off. The drawing represents thetable J to be below the saw. It is, however, clear that substantiallythe same invention may be used where the saw extends from beneath,through a table that supports the board to be out or grooved. I preferthe arrangement shown in the drawings, because it enables the attendantto follow the work which the saw performs and keep it under completecontrol, especially when the saw is to be used for grooving.

The operation of the machine will be readily understood. The board to besawedis placed on the table J, against a suitable stop, n, and the saw,which is being revolved by the beltconnection with the shaft B, is thendrawn forward, so as to cut through the board. Fig. 1 represents it inposition where it is drawn forward to about half of its extent ofmotion. By being hung in the sliding carriage H, the sawshaft G iscapable of rectilinear motion when drawn or pushed by the handle m, andthis support H also prevents the saw from exercising any influence onthe wood it cuts byweight. It simply acts as a cutting-tool.

Instead of providing the saw-frame F with the handle m, that can bemoved by hand, it

may be connected with a projection, which may enable it to be moved bythe foot or automatically, if desired. The guides or slides of the saw,by which a straight run is obtained, may either be of the constructionshown in Fig. 3, or as in Fig. 5, where the carriage H is represented astraveling on rollers 0, that are hung on the frame A, and beneathrollers 10, that are hung on uprights Z, which project from the frame.A. In other words, the lower rollers, 0, combined with the upperrollers, 19, take the place of the groove whichis shown in Fig. 3.

It will readily be perceived that the saw I can be moved freely backwardand forward without altering the tension of the belt. The slidingcarriage H is practically used only to give the saw a path wherein totravel during its reciprocating motion without straining the jointedframes D F or their belts e and h.

I do not claim a circular-saw mill in which the saw'is movable and hung,as in Patents J, having stop mall arranged substantially. as

described.

CHARLES TOLLNER;

Witnesses:

E. 001T MORRIS, O. F. -Woo:ns.

